Polypropylene Random Copolymer
PP random copolymer is a grade of PP copolymer. It has the highest strength compared to the other variants of PP copolymer. The graph bars on the material properties cards below compare PP random copolymer to: polypropylene plastics (top), all thermoplastics (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
0.9 GPa 0.13 x 106 psi
Elongation at Break
12 %
Flexural Modulus
1.3 GPa 0.18 x 106 psi
Flexural Strength
31 MPa 4.5 x 103 psi
Impact Strength: Notched Izod
350 J/m 6.6 ft-lb/in
Tensile Strength: Ultimate (UTS)
33 MPa 4.8 x 103 psi
Thermal Properties
Heat Deflection Temperature At 1.82 MPa (264 psi)
50 °C 120 °F
Heat Deflection Temperature At 455 kPa (66 psi)
98 °C 210 °F
Maximum Temperature: Mechanical
80 °C 180 °F
Melting Onset (Solidus)
150 °C 300 °F
Other Material Properties
Density
0.9 g/cm3 56 lb/ft3
Dielectric Constant (Relative Permittivity) At 1 Hz
2.3
Dielectric Strength (Breakdown Potential)
21 kV/mm 0.82 V/mil
Common Calculations
Stiffness to Weight: Axial
0.56 points
Stiffness to Weight: Bending
36 points
Strength to Weight: Axial
10 points
Strength to Weight: Bending
25 points
Followup Questions
Further Reading
SPI Plastics Engineering Handbook of the Society of the Plastics Industry, Inc., 5th ed., Michael L. Berins (editor), 2000
Modern Plastics Handbook, Charles A. Harper (editor), 1999
Plastics Materials, 7th ed., J. A. Brydson, 1999
Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012